Improved evapobating-pans



3. PAGE. Eva'p orating Pan. No. 66.037. Patented June 25, 1867.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, SAMUEL PAGE,of McAllisterville, in ,the county ofJuniata, and State of Pennsylvania, have invented a new and usefulimprovement in Evaporators; and I do hereby declare the followingto be afull, clear, andcxact description of the nature, construction, andoperation of the same, reference being had to the accompanying drawings,which are made a part of this specification, and in which' Figure 1 is alongitudinal section of an evaporator illustrating my invention, .theline a 2;, fig. 2, indicating the plane of section.

Figure 2 is a transverse section of the same, at the line y y, fig. 1.

Similar letters of refereuce'indicate corresponding parts in the twofigures.

In this evaporator an adjustable plate or bottom is arranged beneath thereceiving or skimming-pan in such a manner that the heating fine of thelatter may be enlarged or contracted so as to increase or diminish theheat as occasion may require,- The finishing-pan rests upon the walls ofa chamber arranged at one side of the main flue, and a novel arrangementof dampers controls the heat within said chamber or excludes it entirelytherefrom, as may be desired. i

The following description will enable others skilled in the art to whichmy invention appertains to fully understand and use the same. a w

A A are the walls of the evaporator, and B the chimney ordischarge-fine, the fire-box being located at the end 0. D is the fluethrough which the heated products of combustion are conducted to thechimney B. This fine extends beneath the receiving orskimming-pan E,which is located between the boiling-pan F and the chimney B. The plateD forms the bottom of-thc flue D, whilst the bottom of pan E forms thetop of said flue. The said plate Dis pivoted at the end (Z, and at itsopposite end rests upon the rod D which is bent so as to form the twoknees dd. By turning the handle (indicated by dotted lines at d", fig.2,) the knees cl, d of the rod D may he brought in contact with theunder surface of the plate D, and' by this means the latter may beraised, as indicated by the red lines in fig. 1, so as to graduallycontract'the flue D toward its discharge end, which is done for thepurpose of retaining the heat'in said flue when it is desirable to applyan increased amount 0t heat to the pan E; By means of the rod D themovable fine-plate D may be adjusted so as to increase or diminish, toany desired extent, the heat which is applied to the pan E. G isthefinishing-pan, which is supported upon the walls of the chamber H. Bymeans of the damper I, fig. 1, and the damper J, fig. 2, the heat may beallowed free access to andegress from the chamber H of the finishing-panG, or these dampers may be made to shut off the heat from said chamberby closing the communication of the latter with. the fire-chamber C andflue D, as indicated by the red lines in the drawings. Thus, when theevaporating process in thefinishingpan G has been completed, the heatmay be withdrawn from the latter while evaporation is in steady progressin the pans E F, and the heat in the latter undiminished. The plate Kprojects centrally into the chamber H, and causes a reverberation ofheat therein.

Having thus described my invention, the following is what I claim as newherein, and desire to secure by Letters Patent:

1. I claim the adjustable plate D arranged as herein described, andemployed to vary the size of the flue beneath the receiving orskimming-pan in the manner and for the purpose specified.

2. I claim the combination, with the finishing-man G and chamber H, oithe dampers I J, arranged and operating in the manner and for thepurpose set forth. SAMUEL PAGE.

Witnesses:

JOHN T. CmswELL, WILLIAM DUNN.

